Gentleman’s Agreement is a 1947 American drama film based on Laura Z. Hobson’s best-selling 1947 novel of the same name. It concerns a journalist (played by Gregory Peck) who poses as a Jew to research an exposé on the widespread distrust and dislike of Jews in New York City and the affluent communities of New Canaan, Connecticut and Darien, Connecticut. It was nominated for eight Oscars and won three: Best Picture, Best Supporting Actress (Celeste Holm), and Best Director (Elia Kazan).
The movie was controversial in its day, as was a similar film on the same subject, Crossfire, which was released the same year (though that film was originally a story about anti-homosexuality, later changed to anti-Semitism).
In 2017, the film was selected for preservation in the United States National Film Registry by the Library of Congress as being “culturally, historically, or aesthetically significant”. It was released on DVD as part of the 20th Century Fox Studio Classics collection.
source: wikipedia